Dual sash weight



Feb. 3, 1942.

C. E. PE CK DUAL SASH WEIGHT Filed Aug. 12, 1940 INVENTOR. A11A6.QQ4-90.

ATTORNEY.

. I l l l l I I I I l I l t I l I l I l l l l l l I I 1 x i I I l I 1 Iu l l A I l Patented Feb. 3, 1942 UNITED STATES PATENT OFFICE 2,271,527I DUAL SASH WEIGHT Gortez E. Peck, Dallas, Tex. Application August 12,1940, Serial No. 352,178

2 Claims.

This invention relates to a window counterbalance construction and moreparticularly to a novel sash weight assembly which is utilized in suchmanner that a pair of such assemblies balance the weight of a pair ofsashes so that such sashes may be readily moved and will remain in anydesired position between the fully opened or the fully closed position.

An object of the invention is to provide a construction whereby a pairof sashes may be fully counterbalanced by a single pair of sash weights.

Another object is to provide a construction whereby the wear upon a sashcord is distributed throughout the length of such cord.

Another object is to provide a sash weight which is simple and which isalso inexpensive to construct. v I

Still another object is to provide a sash weight having at its upper enda helical supporting loop adapted to threadably enter an eye in asupporting member.

Another object is to provide a sash weight having a supporting loop towhich attachment is made in a manner to be non-releasable when theweight is installed within the weight passage of the window frame.

Still another object is to provide a sash weight which is cast ofcementitious material and which is provided with a plurality ofelongated peripheral beads which serve to minimize the areal contact ofthe weight with the walls of the weight passage in a window frame.

The foregoing objects will, together with other objects, become morefully apparent from the following description taken'in connection withing the desired connection between the sash weight and the supporttherefor.

While the sash Weight constituting an element of the present inventionis illustrated in the accompanying drawing as utilized within a windowframe to counterbalance the weight of the sashes of a Window, it is tobe understood that such element; of the invention is of general utilityand may be used for any analogous purposes where a counterbalance weightis desired. In the drawingthe numeral I refers generally to a windowframe in which are mounted upper and lower sashes 2 and 3, each of suchsashes being movable vertically "to control the window opening. p

' In order to make the sashes readily movable manually and to cause suchsashes to remain in desired positions to which they are moved,counterbalance means is provided including a weight assembly generallyreferred to as it) including a mass I I and a sheave I2 attached to suchmass at itsupper end. A sash cord 4 passes-beneath the sheave I2 andflights Sand 6 of such cord pass upwardly therefrom and over the sashpulleys 1 and 8 secured within the frame I. The ends of the cord 4 areattached respectively to the sashes 2 and 3 as indicated at 9 and 9.

It .is to be noted that in accordance with the foregoing description theweight assembly I0 is instrumental in providing the desiredcounterbalancing of both of the sashes 2 and 3 and hence a single pairof the counterbalance assemblies may be utilized instead of a pair ofsash weights for each of the sashes 2 and 3. Accordingly the number ofsash weight assemblies necessary is reduced by one-half. Theconstruction also has the advantage in distributing the wear upon thesash cord 4 since difficulty has previously been experienced withabrasion of the sash cord where such cord is attached to the weightmember. Through the use of the sheave I 2 the apparent point ofattachment of the cord to the weight depends at any time upon therelative positions of the sashes 2 and 3.

The weight II is a composite cast construction comprising a container 20of suitable material such as galvanized sheet metal or any of thenoncorrodible sheet metals now available on the market. This containeris provided with a plurality of beads 2| extending lengthwise of itsouter surface, such beads being designed to provide a small area ofcontact of the weight member I I with the inner walls of the weightpassage I3 in the window casing I.

The container 20 is formed from a single sheet of material and is closedby means of the folded and crimped seam 22 positioned at a desirablelocation on the periphery thereof. This seam is formed by providing areverse bend I9 adjacent one end of the sheet metal. The opposite end ofthe sheet is displaced inwardly at I8 and adjacent thereto is providedwith the reverse bend I I so that the edge fits within the channelformed by the reverse bend l9. This construction is such as to providea. smooth outer surface yet at the same time a metallic containercapable of serving efiectively as a form for the cementitious material24 to be cast therein. The seam 22 as just described also increases theinner surface of the container whereby an effective bond is providedbetween the cast material 24 and the container.

In order to provide the composite weight structure H a supporting rod 25ispositioned axially thereof, such rod comprising a plurality of zigzagportions 26 within the container 20. A body 24 of cementitious material,such as Portland cement is cast within the container 20 and about therod 25, it being understood that the weight of the component parts issuch as to provide the desired weight in the completed unit. Thecontainer 23 is also provided with a plurality of indentations 2'? toenhance the bond between the cement 24 and the container 20. It ispreferable that the container 20 be generally rectangular in shape asindicated since such shape is instrumental in preventing the rotation ofthe weight member within the passage l3 of the window frame.

Adjacent the upper end of the container 2!] the rod 25 is curved at 30away from the axis of the weight and the end beyond the curve 30 isformed into a helix 3| having a plurality of turns 32, 33 and 34.

The pulley block of the sheave I2 is formed of a rod 35 which maybe ofsimilar material and dimensions as the supporting rod 25. This rodpasses through the pulley and extends downwardly on opposite sidestherefrom. The rod 35 of the pulley block is twisted at 36 to form aneye 3'! with which a connection is made with the rod 25 of the weightll. This connection is made by holding the sheave l2 at substantially aright angle to the axis of the helix 3i and threading the eye 31 oversuccessive turns of the helix until a plurality of the turns of thespiral pass through the eye. The sheave may then be moved to a positionin alignment with the weight ll whereupon the assembly I9 is ready foruse.

It is to be noted that the sheave l2 cannot become disconnected from theweight H unless the sheave is moved from alignment therewith. Hencethese elements of the weight assembly can not become disconnected whenin normal use within the channel 13 in the window frame I. It shouldalso be noted that the connection just described is such as to providedesired resiliency in the assembly to take care of the forces ofacceleration and deceleration which arise when the weight assembly is innormal use.

While a specific embodiment of the invention has been described andillustrated it is to be understood that the invention is not confined tosuch specific construction since broadly the invention comprehends acounterbalance construction which is extremely simple and which isinexpensive to manufacture.

What is claimed is:

1. A sash weight comprising a metallic container, a support rodextending downwardly within said container, and cementitious materialfilling said container and anchoring said rod therein, said support rodterminating at its upper end in a multiple turn helical coil proximatethe surface of the body, said coil being adapted to threadably enter aneye on a supporting member so that a plurality of turns of the coil passthrough such eye and support the weight.

2. A sash weight comprising a support rod anchored within an elongatedbody of cementitious material, said support rod terminating in amultiple turn helical coil proximate the surface of the body and havingits axis substantially transverse to the body, a support member, an eyeon said member, the turns of said coil threadedly entering the eye sothat a plurality of turns of the coil pass through such eye and supportthe weight.

CORTEZ E. PECK.

